org.obiba.opal.web.gwt.app.client.ui.celltable.IconCell.java Source code

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Here is the source code for org.obiba.opal.web.gwt.app.client.ui.celltable.IconCell.java

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/*
 * Copyright (c) 2013 OBiBa. All rights reserved.
 *
 * This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.obiba.opal.web.gwt.app.client.ui.celltable;

import com.github.gwtbootstrap.client.ui.Icon;
import com.github.gwtbootstrap.client.ui.constants.IconType;
import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.cell.client.ValueUpdater;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.EventTarget;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;

/**
 * A cell that renders a icon.
 *
 * @param <C> the type that this Cell represents
 */
public abstract class IconCell<C> extends AbstractCell<C> {

    public IconCell() {
    }

    /**
     * Method to be overridden in order to enable dynamically the icon. Default is enabled.
     *
     * @return
     */
    public boolean isEnabled() {
        return true;
    }

    /**
     * Get the icon type from the value.
     * @param value
     * @return
     */
    public abstract IconType getIconType(C value);

    @Override
    public void render(Context context, C value, SafeHtmlBuilder sb) {
        IconType iconType = getIconType(value);
        if (isEnabled()) {
            if (iconType != null) {
                Icon i = new Icon(iconType);
                sb.append(SafeHtmlUtils.fromSafeConstant("<span class=\"icon\">")).appendHtmlConstant(i.toString())
                        .append(SafeHtmlUtils.fromSafeConstant("</span>"));
            } else {
                sb.append(SafeHtmlUtils.fromSafeConstant("<span class=\"icon\">"))
                        .append(SafeHtmlUtils.fromSafeConstant("</span>"));
            }
        } else {
            if (iconType != null) {
                Icon i = new Icon(iconType);
                sb.append(SafeHtmlUtils.fromSafeConstant("<span class=\"icon disabled\">"))
                        .appendHtmlConstant(i.toString()).append(SafeHtmlUtils.fromSafeConstant("</span>"));
            } else {
                sb.append(SafeHtmlUtils.fromSafeConstant("<span class=\"iconb disabled\">"))
                        .append(SafeHtmlUtils.fromSafeConstant("</span>"));
            }
        }
    }
}